Draw-gear and buffing apparatus.



`PATENTED 00121-1903;

No.v742,792.

W. Sl JONES. DRAW GEAR AND BUFFING APPARATUS. APPLICATION FILED s'nPT.16, 1901. BBNBWIJDooT. 2, 19o3.

3 SHEETS-SHEET l.

H0 MODEL.

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No. 742,792. PATENTED OCT. 27J 1903. W. S. JONES. DRAW GEAR AND BUPFING APPARATUS.

APPLICATION FILED SEPT. 16, 1901. BENEWED 00T. 2, 1903.

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N0 MODEL.

W. s..J.oNRs. DRAW GEAR AND RURFING APPARATUS. APPLICATION FILED SEPT. 16.19.01. RENEWED 00.1'.

a 'sums-SHEET a.

Ro MODEL.

No. 742,79. atented October 27, 1903:.

UNITED STATES PATENT OFFICE.

WILLIS S. JONES, OF CHICAGO, ILLINOIS, ASSIGNOR TO GEORGE WESTING'- HOUSE, OF PITTSBURG, PENNSYLVANIA.

DRAW-GEAR AND BUFFINGV APPARATUS.

SPECIFICATION forming part of Letters Patent No. '742,792., dated October 27, 1903. Application filed September 16, 1901. Renewed October 2.1903. Serial No. 175,527. (No model.)

To all whom it may oon/cern: both series being relatively moved in different Be it known that I, WILLIS S. JONES, a citiangular directions Whenever a pulling or buifzen of the United States, residing at Chicago, ing strain occurs.

county of Cook, State of Illinois, have invent- A further object is to augment the retarda- 5 ed a certain new and useful Improvement in tion by subjecting a compression-spring in- 55 Draw-Gear and Bufng Apparatus; andI deterposed between said series of devices to a clare the following to be a full, clear, and eX- torsional strain through the engagementof its act description of the invention, such as will opposite ends with the inner friction devices enable others skilled in the art to which it of the two series, such devices being rotated ro pertains to make and use the same, reference slightly in opposite direction in parallel ver- 6o being had to the accompanying drawings, tical planes. which form a part Yof this specification. My invention will be more fully described My invention relates in general to drawhereinafter with reference to the accompanygear and buffing apparatus, and more particuing drawings, in which the saine is illustrated x5 larly to that type of such apparatus in which as embodied in several convenient and prac- 65 a frictional resistance is produced and extical forms, and in whicherted to reduce or dissipate the shocks due to Figure 1 is a longitudinal section through a the pulling and buffing strain incident to the draw-gear and bufing apparatus embodying starting and stopping of a train, and thereby my invention; Fig. 2, a view similar to Fig.

zo obviate injury to the draw-bar or draft-timl, showing the parts of the apparatus in the 7c bers of the rolling-stock. positions they assume when subjected to a The object of my invention is to provide a pulling strain; Fig. 3, an end view of the casdraw-gear and buffing apparatus of the type ing or housing, showing guides for displacing referred to in which a series of friction dealternate friction devices; Fig. 4, a perspec- 25 vices are forcedl into frictional engagement tive view of one end of the casing, showing 75 with each other by the pulling or bufing the same arrangement of the guides as Fig. strain and adjacent devices then moved 3; Fig. 5, aperspective view similar to Fig. 4, transversely to the line of draft and relatively illustrating a modified arrangement of the in dilferent angular directions. The relative guides; Fig. 6, a view similar to Figs. 4 and 5,

3o transverse movement between adjacent fricshowing still another modified arrangement 8o tion devices may be accomplished either by of the guides, a portion of the upper Wall of the transverse displacement of one set of althe casing being broken away to better illusternate devices, while the alternate devices trate the top guides; Fig. 7, a view similar forming a second set are held transversely imto Fig. 1, showing a modified arrangement of 35 movable, or by the vertical displacement of the guides; Fig. 8, a view similar to Fig. 3, 85 one set of alternate devices, while the other showing the arrangement of the guides in the set of alternate devices are displaced horimodificatidu shown in Fig. 7; and Fig. 9 a Zontally, or by the vertical displacement of view similar to Figs. 4 and 6, showing the arone set of alternate devices due to the elevarangement of the guides illustrated in Figs.

4o tion of one side and the depression of the 7 and 8. 9o other side of each device, while the second set Similar reference characters are used to inof alternate devices are either moved transdicate similar parts in the several views of versely in an opposite direction or are held lthe drawings. transverselyimmovable or are displaced hori- My invention in the forms illustrated'em- 45 zontally. bodies a casing or housing, within the oppo- 95 Afurther object of my invention is to prosite ends of which are located friction devide an apparatus of the character referred vices, such friction devices being interposed to in which the desired retardation is probetween the opposite ends of a compressionduced by a series of friction devices located spring and exterior follower-plates, the latter 5o in each end of a casing, adjacent devices in heilig engaged by the draw-bar and strap or roo yoke connected thereto. The friction devices are brought into frictional contact by a` longitudinal movement and are then relatively moved transversely to the line of draft and adjacent devices relatively moved vertically to produce the desired retardation to the' movement of the draw-bar relative to the v draft-timbers of the car.

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Referring more in detail to the views on the sheets of drawings, reference-letter B indicates a portion of the draw-bar, to the enlarged end b of which are secured by suitable fastening devices b a yoke or strap B. The draw-gear and bufng apparatus is located within the strap B vand engages suitable v.stops upon the draft-timbers of the car,where by the strain either in pulling or hunting is transmitted from the draw-bar B and the straps B' to the draft-timbers of the car through the interposed apparatus, whereby the injurious shocks are reduced or dissipated.

C indicates a casing or housing,which comprises hollow end portions C and O2, preferably rectangular in shape, and side portions connecting the end portions andl preferably formed integral therewith.

A series of any desired number of friction devices are located within the end portions of the casing, each series being arranged in two sets H and H, consisting of alternate devices. The exterior friction devices in each series are engaged by followers D and D2, the former of which is interposed between the end of the draw-bar and the hollow end portion C of the casing,while the latter follower D2 is interposed between the loop formed in the strap or yoke B and the hollow end C2 of the casing. The followers D and D2 are pro-f vided with reduced portions which engage the exterior friction devices of each series.` Located between the series of friction devices is a compression-spring F, which engages at its opposite ends with the inner friction devices E and E2, respectively, in each series. A smallercompression-spring F may, if desired, be located within the larger one and may be retained in proper position by means of annular projections wardly from the friction devices E and E2.

Within the hollow end portions O and C2 of the casing are provided guides so arranged as to engage and thereby move one set of the alternate friction devices relatively to the other set of alternate friction devices, and thereby retard the movement of the draw-bar relatively to the draft-timbers of thecar. I may provide various arrangements of guides in order to produce the relative movement between the sets of alternate devices. In Figs. 3 and 4, for instance, the interior surfaces of the side walls of the hollow end portions of the casing are provided with guides inclining upwardly from the outer to the inner end of the hollow end portions of the casing. The alternate friction devices of one set-H, for

extending in-` l instance-*are provided with reduced side extensions of a vertical height equal to the distance between the guides c c', while the friction devices of the other set H are provided with reduced side extensions which do not engage the guides c c, and consequently are not moved transversely to the line of draft, but merely longitudinally thereof during a pulling or bufng strain. lThe devices in the set H are moved transversely to the line of draft and vertically with respect to the devices in the second set H during a buffing or pulling strain, owing to the engagement of their reduced side extensions with the guides c'c, when the friction devices and the end portions of the casing move relatively.

In Fig'. 5 a modificationof the guides within the hollow end portions of the casing is illusmated. In this instance the guides c c on one of the interior side walls of the casing are inclined upwardly from the outer to the inner end thereof, while the guides c3 cs on the opposite innersurface of the casing are inclined downwardly from the outer to the inner end thereof. Consequently when the friction devices of the series H are moved relatively their reduced extensions, through engagement with the guides, cause the devices to be moved vertically upwardly at one side and vertically downwardly at the other side, thereby imparting a slightly rotary motion to the alternate devices in the set H, while the alternate devices in the second set H are not movable transversely' to the line of draft. y

Still another modification of the arrangement of guides within the hollow end portions of the casing isillustrated in Fig. 6, in which the relative movement between adjacent friction devices is produced by moving alternate friction devices in both of the two sets. The

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arrangement of guides in the embodiment of this modification of my invention may be the same as that illustrated in Figs. 3 and 4, in that parallel guides c c are provided on each of the opposite interior side walls of the hollow end portions of the casing, such guides inclining upwardly from the outer to the iuner ends of the end portions. In addition to the guides referred to other guides are provided upon the interior upper and lower walls of the hollow end portions of the casing, guides c4 c4 inclining in a horizontal direction from the outer to the inner ends of the hol` low portions of the casing, thereby causing the alternate friction devices in the set H to be moved transversely to the line of draft and horizontally with respect to the alternate friction devices in the first set H whenever the friction devices and the casing move relatively longitudinally, such relative movement occurring whenever the apparatus is subjected to a buftng or pulling strain. It

is of course obvious that the side extensions on the alternate friction devices in the set should not engage the vertically-inclined such guides c' c' and also that the reduced extensions on the upper and lower sides of the alternate friction devices in the set H should not engage the horizontally-inclined guides c1 c4. It is also of course obvious that the alternate friction devices in the set H', which are moved horizontally, should be of a width slightly less than the interior width of the hollow end portions of the casing, so as to permit the horizontal movement of such devices therein. The alternate devices in the set H should also of course be of a height less than the interior height of the hollow end portions of the casing in order that such devices may be moved vertically therein through the engagement of their side extensions with the upwardly-inclined guides c' c'.

Figs. 7, 8, and 9 illustrate a further modiied arrangement of the guides within the hollow end portions of the casing, iu which one set of alternate friction devices in each of the hollow end portions of the casing engage guides which cause the devices to be moved vertically upwardly at one side and vertically downwardly at the other side,while the second set of alternate devices in each of the hollow end portions of the casing is moved horizontally in one direction at the top and horizontally in the other direction at the bottom, thereby imparting a slightly rotary motion in opposite directions to the two sets of friction devices. Guides c' c' on one of the interior side walls of the hollow end portion C' of the casingincline upwardly,while guides c3 c3, formed on the opposite interior side walls of the end portion C' of the casing, incline downwardly from the outer end toward the center of the casing. These guides are engaged by reduced side portions on the alternate friction devices H and slightly rotate such devices as they are moved longitudinally with respect to the casing. Guides c2 cfe are located on the interior upper wall of the end portion C' of the casing and incline from right to left, while guides c4 c4 are formed on the lower interior wall of the end portion C' and incline from left to right. The arrangement of the guides on the interior of the hollow end portion C2 is reversed from the arrangement in the hollow end portion C', thereby imparting a slight rotary motion to the sets of alternate devices in opposite directions, so that the inner friction devices of the sets H', which engage the opposite ends of the springs F and F', move transversely in opposite directions, thereby imparting a torsional strain to the springs through their frictional contact therewith.

rlhe operation of my improved draw-gear and buffing apparatus will be readily understood from the foregoing description and is as follows: When a pulling strain is exerted upon the draw-bar B, the yoke B', through its engagement with the follower D2, forces the latter against the adjacent friction devices in the hollow end portion C2 of the casing, such friction devices being thereby forced pression between the follower D' into frictional engagement with each other owing to the tension of the springs F and F' resisting the movement of such devices toward the center of the casing. The opposite follower D is held immovable with relation to the draft-timbers of the car by means of the stops usually provided for such purpose, and consequently the casing C is bodily moved relatively to the follower D', such movement of the casing being due to the frictional engagement between the extensions on the friction devices and the guides formed upon the interior surfaces of the walls of the hollow end portion C2 of the casing. The friction devices within the end portion C' of the casing are consequently subjected to comand the springs F and F', and thereby forced into frictional engagement with each other. The series of friction devices Within both of the end portions C' and C2 of the casing are therefore moved relatively to the casing from the positions indicated in Fig. l to the positions indicated in Fig. 2. movement between the friction devices and the casing alternate friction devices are moved transversely to the line of draft and also relatively to the intermediate alternate friction devices owing to the engagement of the extensions on the friction devices with the guides within the end portions of the casing.

The operation of my improved apparatus when a strain is exerted upon the draw-bar in an opposite direction to that described, as when a bufng action occurs, is similar in all respects to the operation above described which takes place when a draw-bar is subjected to a pulling strain, except that the follower D2 is held immovable with respect to the draft-timbers of the car by the usual stops, while the follower D' is engaged by the enlarged end b of the draw-bar, and thereby forced in a direction toward the followerplate D2. The relative positions of the parts of the apparatus in bufting would be the same as indicated in Fig. 2, except that the end b of the draw-bar would bein engagement with the follower D', while the strap B' would be moved away from the follower D2. When the strain upon the draw-bar is relieved, the follower-plate which has been moved will be gradually returned to its normal position against the stops on the draft-timbers by the expansion of the springs, such expansion also moving the sets of friction devices toward the outer ends of each of the hollow portions of the casing, thereby returning the series of friction-plates through the engagement of their extensions with the guides to their normal positions. No special means are therefore required for restoring the parts of my apparatus to their normal positions, such restoration being accomplished by the expansion of the springs, the compression of which effected the frictional engagement between the series of friction devices. l

In the modification 'of the arrangement of During the relativev IOO IIO

guides shown in Figs. 7, 8, and 9in which the alternate friction devices in one set are moved vertically upwardly at one side and vertically downwardly at the other side, while the alternate friction devices in the second set are moved horizontally in one direction at their tops and horizontally in the opposite direction at their bottoms,the spring or springs which engage the inner friction devices are subjected to a slight rotary motion owing to the arrangement of the guides referred to, thereby subjecting the springs to a torsional strain in addition to the compression thereof when the apparatus is in operation, such tor sionalstrain adding slightly tothe retardation produced by the relative movement of the adjacent friction devices.

From the foregoing description it is evident 'p that I have produced a draw-gear and buffing apparatus in which a series of friction devices are brought into frictional contact by a longitudinal movement and adjacent devices are then relatively moved transversely to the line of draft and in different angular directions to produce the requisite retardation. Itis evident that other arrangements ofguides than those illustrated in the drawings within the end portions of the casing might be devised for prod ucing the desired relative movement between adjacent friction devices, and I do not, therefore, Wish to limit myself to the specific arrangements of guides herein disclosed.

While I have described more or less precisely the details of construction, I do not wish to be understood as limiting myself thereto, as I contemplate changes in form, the proportion of parts, and the substitution of equivalents, as circumstances may suggest or render expedient Without departing from the spirit of my invention.

Having now fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a draw-gear and buffing apparatus, the combination with a series of friction devices, of means for forcing said devices into frictional engagement, and means for moving one set of alternate devices'transversely to the line of draft and angularly with respect to the other set of intermediate alternate devices, substantially as described.

2. In a draw-gear and bufiing apparatus, the combination with a series of friction devices, of means for forcing said devices into frictional engagement, and means for moving adjacent devices transversely to the line of draft and relatively in different angular directions, substantially as described.

A In a draw-gear and buffing apparatus, the combination with a series of friction devices, of means for forcing said devices into frictional engagement, means for moving one set of alternate devices transversely to the line of draft and vertically with respect to the other set of alternate intermediate devices, and means for moving said second-set of alter- 'marea nate devices transversely to the line of draft and horizontally with respect to the said first set of alternate evices, substantially as described. v

4. In a draw-gear and bufng apparatus, the combination with a series of friction devices, of means for forcing said devices into frictional engagement, and means for moving one set of alternate devices transversely to the line of draft and opposite ends of said devices in opposite directions with relation tothe other set of intermediate alternate devices, suhstantially as described. l

5. In an apparatus of the class described, the combination with a casing, of friction devices therein, means for forcing said devices into frictional engagement by a longitudinal movement thereof, and means for moving saidI devices transversely to the line of draft and relatively in different angular directions, substantially as described.

6. In a draw-gear and buffiug apparatus, the combination with a hollow casing, of guides on the interior surfaces of said casing, friction devices engaging said guides, means for yieldingly resisting the movementof said devices, means for moving said devices longitudinally into frictional contact, said devices being relatively moved transversely to the line of draft, and in dierent angular directions through their engagement with the guides on the interior surfaces-of said casing, substantially as described.

7. In a draw-gear and bung apparatus, the combination with a casing, of guides on the interior surfaces of said casing, of a follower adapted to move relatively to said casing, a compression-spring adapted to resist the movement ot' said follower, friction devices interposed between said follower and said spring and engaging said guides,where by the movement of said follower forces said devices into frictionalengagement while said devices are moved transversely to the line of draft and relatively in different angular directions through their engagement with said guides, substantially as described.

8. vIn a draw-gear and bufting apparatus, the combination with a casing, of detached friction devices in each end thereof, means for forcing said devices into frictional engagement, and means for moving adjacent devices transversely tothe line of draft and relativelyin dierent angulardirections, substantially as described.

9. In a draw-gear and buffing apparatus, the combination with a casing, of guides on the interior surface of said easing, of a follower adapted to move relatively to said casing, a compression-spring adapted to resist the movement of said follower, friction devices interposed between said follower and said spring and engaging said guides whereby the movement of said follower forces said devices into frictional engagement while one set of alternate devices are moved through their engagement with said guides trans- ICO IIO

versely to the line of draft and opposite ends In testimony whereof I sign this specicaof said devices vin opposite directions with retion in the presence of two Witnesses.

lation to the other set of intermediate alternate devices, said spring being engaged by WILLIS s' JONES' the adjacent device in said first set of aiter- Witnesses:

nate devices and thereby subjected to a, tor- GEO. L WILKINSON,

sional strain, substantially as described. CLARA C. CUNNINGHAM. 

